Systems and methods for delivering stent grafts

US11090177B2 · kind B2 · utility

Assignee

• PQ Bypass, Inc.

Inventors

• Gene Reis · San Jose, US
• Kumar Jambunathan · Sunnyvale, US
• Steven A. Tyler · Portola Valley, US

Key dates

• Filing date: Mar 19, 2019
• Grant date: Aug 17, 2021
• Expiry date: Mar 30, 2039

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2002/9623
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A delivery catheter comprises an inner shaft and an outer sheath. A stent-graft is held on a region of the inner shaft. An enlarged diameter distal region of the outer sheath constrains the stent-graft. Its retraction allows the stent-graft to deploy. A finger wheel on a handle is used to retract the outer sheath and is coupled to a sliding block with cable(s). The sliding block is coupled to the outer sheath and is held within a sliding track. The wheel can be actuated to tension the cable(s) and deform latch(es) coupled to sliding block, freeing them from slot(s) in the sliding track and allowing retraction of the sliding block and the outer sheath. A reinforcement sleeve is coupled to a smaller diameter proximal region of the outer sheath. A gap between the outer sheath distal region and the reinforcement sleeve allows the distal outer shaft region to be retracted.